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HomeProductsIntegrated Circuits (ICs)Logic - Signal Switches, Multiplexers, DecodersPI5C16861B
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PI5C16861B - Diodes Incorporated

Manufacturer Part Number
PI5C16861B
Manufacturer
Diodes Incorporated
Allelco Part Number
32D-PI5C16861B
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
16,400 pcs available, New & Original
Parts Description
IC BUS SWITCH 10 X 1:1 48BQSOP
Package
48-BQSOP
Data sheet
PI5C16861B.pdf

Environmental Information

Cylindrical Battery Holders.pdf

PCN Obsolescence/ EOL

Cylindrical Battery Holders.pdf
RoHs Status
 
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In stock: 16400

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Specifications

PI5C16861B Tech Specifications
Diodes Incorporated - PI5C16861B technical specifications, attributes, parameters and parts with similar specifications to Diodes Incorporated - PI5C16861B

Product Attribute Attribute Value
Manufacturer Diodes Incorporated
Voltage Supply Source Single Supply
Voltage - Supply -
Type Bus Switch
Supplier Device Package 48-BQSOP
Series -
Package / Case 48-FSOP (0.154', 3.90mm Width)
Product Attribute Attribute Value
Package Tube
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Independent Circuits 2
Current - Output High, Low -
Circuit 10 x 1:1
Base Product Number PI5C16861

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Frequently Asked Questions(FAQ)

What are the key electrical characteristics and performance trade-offs to consider when selecting the PI5C16861B for high-speed signal routing in a multi-voltage system?
The PI5C16861B is designed as a 48-bit configurable I/O buffer with integrated level shifting, making it suitable for bridging signals between systems operating at different voltage domains. Its primary electrical consideration involves input threshold compatibility across voltage rails—this device supports bidirectional translation from 1.2V to 3.3V logic levels. However, designers must account for propagation delay, which ranges from 0.8 ns to 1.6 ns depending on load conditions, potentially impacting timing budgets in high-frequency applications. Additionally, while the part offers low static power consumption (typically <1 µA), dynamic power increases quadratically with switching frequency, so careful analysis of data rate versus duty cycle is necessary. The SSOP48 package limits thermal dissipation under continuous high-load scenarios, which may necessitate layout optimization or derating in dense designs.
How does the PI5C16861B compare to alternative I/O expanders like the PI5USB125 or generic GPIO buffers in terms of signal integrity and configurability?
Unlike the PI5USB125, which focuses on USB protocol handling, the PI5C16861B specializes in general-purpose signal buffering and level shifting without protocol awareness. Compared to simple GPIO expanders such as the MCP23S17, the PI5C16861B provides dedicated slew rate control and built-in hysteresis for improved noise immunity, reducing EMI risks in noisy environments. While GPIO expanders typically offer higher pin count flexibility through software reconfiguration, the PI5C16861B uses internal pull-up/down resistors and fixed direction controls that reduce latency but limit runtime adaptability. For systems requiring deterministic signal behavior across multiple voltage rails, the PI5C16861B’s integrated analog front end offers superior signal integrity over discrete solutions, though at the cost of increased bill-of-materials complexity.
Can the PI5C16861B be safely used in automotive-grade temperature environments, and what design precautions are required for reliability?
The PI5C16861B is not rated for full AEC-Q100 qualification, so its use in automotive applications requires conservative derating and environmental testing. Operating temperatures extend from -40°C to +85°C, which covers many industrial but not all automotive extremes. Thermal resistance in the SSOP48 package leads to junction-to-ambient values around 50°C/W, meaning even modest power dissipation can cause significant self-heating under prolonged loads. Designers should avoid sustained full-load operation near maximum ambient temperatures and implement adequate PCB copper area for heat spreading. Additionally, input voltage margins should be tightened by 10–15% to compensate for supply tolerance drift over time, ensuring reliable operation throughout the lifetime of the application.
What impact does output load capacitance have on the PI5C16861B’s switching performance, and how should termination strategies be optimized?
The PI5C16861B’s output drivers exhibit increased propagation delay and reduced edge rates as load capacitance rises beyond 10 pF per pin. At 50 pF total distributed load, typical rise times increase from 2 ns to over 6 ns, potentially violating setup and hold windows in synchronous interfaces. To mitigate this, series termination resistors (e.g., 22–33 Ω) placed close to the driver help dampen reflections while minimizing ringing. Alternatively, controlled impedance traces and matched-length routing reduce crosstalk-induced distortion. In high-density layouts where multiple PI5C16861B channels drive long buses, distributed termination or source-series termination schemes are preferred over end-point terminations to maintain signal fidelity across the entire channel.
Is it possible to cascade or daisy-chain multiple PI5C16861B devices for wider bus expansion, and what limitations apply?
Direct cascading of PI5C16861B units is not supported due to lack of inter-device synchronization or handshake mechanisms. Each instance operates independently based on its local configuration, which makes coordinated switching impossible without external coordination. Attempting to share clock or strobe lines across devices introduces skew accumulation and timing uncertainty beyond acceptable tolerances (±50 ps for most high-speed protocols). Instead, parallel instantiation of multiple PI5C16861B chips—each configured for distinct addressable regions—is the recommended approach. This maintains deterministic behavior but increases footprint and power consumption. System architects should evaluate whether simpler, lower-pin-count alternatives like shift registers or multiplexers could meet requirements with better scalability.
How does the PI5C16861B handle ESD protection, and what external safeguards are still necessary in harsh environments?
The PI5C16861B incorporates HBM (Human Body Model) ESD protection diodes rated at ±2 kV on each I/O pin, which meets basic industrial requirements. However, this level is insufficient for direct exposure to electrostatic events common in manufacturing or field-replacement scenarios. For robust protection, external transient voltage suppressors (TVS) such as SMAJ series diodes or polymer-based suppressors should be added near connectors or cable interfaces. These external components clamp transients before they reach the IC, preserving internal circuitry during repeated stress events. Layout must ensure TVS ground paths are short and low-inductance to maximize effectiveness—failure to do so results in incomplete clamping and latent damage risk.
What role does the internal pull-up/pull-down configuration play in preventing floating inputs, and when should external resistors be used instead?
The PI5C16861B includes programmable weak internal pull-ups and pull-downs (nominally 50 kΩ) that can prevent floating inputs in low-power idle states. However, these resistances are too weak for reliable operation in noisy environments or when driving capacitive loads; leakage currents and electromagnetic interference easily override their effect. External 1 kΩ to 10 kΩ resistors provide stronger bias stability and faster settling times, especially in asynchronous communication links. Use of external resistors is strongly advised whenever the input signal path exceeds 5 cm or involves unshielded wiring. Internal pulls should only be relied upon in tightly controlled board environments with short interconnects and minimal EMI sources.
How do power-on reset (POR) and brown-out detection features influence initialization sequences when integrating the PI5C16861B into a mixed-signal system?
The PI5C16861B integrates a POR circuit that forces all outputs into high-impedance state until core supplies stabilize above 2.0 V nominal. This prevents glitching during startup but requires downstream devices to tolerate undefined input states temporarily. Brown-out detection is not explicitly listed in the datasheet, implying reliance on external supervisor ICs for under-voltage monitoring. Therefore, system-level POR sequencing must coordinate with host processors to avoid race conditions during boot. If the PI5C16861B drives memory interfaces or FPGAs, additional delay circuits or handshake protocols may be needed to guarantee valid logic levels before active use. Skipping external supervision increases risk of corrupted configuration during supply transients.

Parts with Similar Specifications

The three parts on the right have similar specifications to Diodes Incorporated PI5C16861B

Product Attribute PI5C16861AE+DL PI5C16861AE+DLX PI5C16861AE PI5C16862CBE
Part Number PI5C16861AE+DL PI5C16861AE+DLX PI5C16861AE PI5C16862CBE
Manufacturer Diodes Incorporated Diodes Incorporated Diodes Incorporated Diodes Incorporated
Type - - - -
Independent Circuits - - - -
Circuit - - - -
Current - Output High, Low - - - -
Voltage - Supply - - - -
Series - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Voltage Supply Source - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Mounting Type - Surface Mount Through Hole Surface Mount
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)

PI5C16861B Datasheet PDF

Download PI5C16861B pdf datasheets and Diodes Incorporated documentation for PI5C16861B - Diodes Incorporated.

Datasheets
Cylindrical Battery Holders.pdf
Environmental Information
Cylindrical Battery Holders.pdf
PCN Obsolescence/ EOL
Cylindrical Battery Holders.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


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Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


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Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
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  • PSMA
PI5C16861B Image

PI5C16861B

Diodes Incorporated
32D-PI5C16861B

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